Recently bought a '09 Legacy diesel in very good condition. The interior (as well as the exterior) is generally in very good shape, with one exception: the dashboard. I'm not sure what's happened here. It almost looks like the previous owner has cleaned it with some kind of acidic substance, or, hell, sandpaper.

Is there anything I can do to at least reduce the visibility of these marks? Surely there must be some remedy I can smear over this that would help?